Table

table.get

Get element from table at index.

Signature: (param i32) (result reftype)

Example:

(table $funcs 10 funcref)
(table.get $funcs (i32.const 0))

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table.set

Set element in table at index.

Signature: (param i32 reftype)

Example:

(table $funcs 10 funcref)
(table.set $funcs
  (i32.const 0)
  (ref.func $my_function))

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table.size

Get current table size.

Signature: (result i32)

Example:

(table.size $funcs)

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table.grow

Grow table by delta, returns previous size or -1 on failure.

Signature: (param reftype i32) (result i32)

Example:

(table.grow $funcs
  (ref.null func)
  (i32.const 5))  ;; Grow by 5 elements

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table.fill

Fill a region of a table with a value.

Signature: (param i32 reftype i32)

Example:

(table $funcs 10 funcref)
;; Fill 5 slots starting at index 0 with null
(table.fill $funcs
  (i32.const 0)       ;; start index
  (ref.null func)     ;; value
  (i32.const 5))      ;; count

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table.copy

Copy elements from one table region to another.

Signature: (param i32 i32 i32)

Example:

(table $funcs 10 funcref)
;; Copy 3 elements from index 0 to index 5
(table.copy $funcs $funcs
  (i32.const 5)   ;; destination index
  (i32.const 0)   ;; source index
  (i32.const 3))  ;; count

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table.init

Initialize table region from a passive element segment.

Signature: (param i32 i32 i32)

Example:

(elem $my_elem func $f1 $f2 $f3)
;; Copy 3 elements from elem segment to table
(table.init $my_table $my_elem
  (i32.const 0)   ;; table destination
  (i32.const 0)   ;; elem segment offset
  (i32.const 3))  ;; count

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elem.drop

Drop a passive element segment, freeing its memory.

Example:

(elem $my_elem func $f1 $f2)
(elem.drop $my_elem)  ;; Element segment can no longer be used

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